When to plant Melon in Custer County, MT
In Custer County, Melon is a single-season spring crop — there's no second fall window. Plant May 28–June 18 for an 70–100-day harvest, finishing well before the September 27 first frost.
When to Plant Melon in Custer County, MT
Melons are warm-season vine crops that produce sweet, juicy fruits in many varieties including muskmelon and honeydew. They need a long, hot growing season.
Custer County, Montana is in USDA Zone 4b. The average last spring frost is May 14 and the first fall frost is September 27, giving you a growing season of approximately 136 days.
At an elevation of 5,983 feet, Custer County receives approximately 24 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Melon to ensure they mature before fall.
Custer County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Melon Planting Timeline — Custer County, MT
Melon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 2 | Apr 2 – Apr 16 |
| Transplant Outdoors | June 4 | Jun 4 – Jun 18 |
| Direct Sow | May 28 | May 28 – Jun 18 |
| Harvest | August 13 | Aug 13 – Oct 1 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
70–100 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 4b
📆 Growing Season
136 days in Custer County
Growing Tips for Custer County
Start seeds indoors 3-4 weeks before transplanting. Plant on raised mounds of compost-enriched soil. Reduce watering as fruits ripen to concentrate sweetness.
Companion Planting
Good Companions
Avoid Planting Near
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Melon in Other Locations
Frequently Asked Questions
When should I plant Melon in Custer County, MT?
Custer County is in Zone 4b with an average last frost of May 14. Plan your Melon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Custer County, MT?
Custer County, Montana is in USDA Hardiness Zone 4b. The average last spring frost is May 14 and first fall frost is September 27.
When should I plant Melon in Custer County, MT?
In Custer County, MT, plant Melon after the last frost (around May 14) and before the first frost (around September 27). Best results when soil holds above 50°F.
What growing zone is Custer County, MT for Melon?
Custer County sits in USDA Zone 4b. Melon grows reliably in zones 4a through 11b, so it's a good fit here.
Can Melon grow in Custer County's climate?
Yes — Melon grows well in Custer County's temperate climate. Custer County averages a 136-day frost-free season, with last frost around May 14 and first frost around September 27.
Your Custer County Garden Planner — Free
A 22-page printable planner built for Custer County (Zone 4b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.